/Engine/Source/Runtime/Landscape/Public/LandscapeConfigHelper.h
template<typename T> static void CopySubregion ( const [TArrayView](API\Runtime\Core\Containers\TArrayView)< T > & InData, [TArray](API\Runtime\Core\Containers\TArray)< T > & OutData, const FIntRect & InSrcRegion, uint32 InSrcDataPitch )